The Apple/Google Pay cards have a DPAN (device account number) that is different to the CPAN of the physical card. It keeps the same issuer (first 6 digits) and the same "last 4" digits, but the others are different.

The DPAN is translated into the CPAN by software at the issuing bank, so it's not identifiable by the merchants.

Merchants get the "last 4" digits, but that's not enough to identify specific CPANs.